Oil-well pump.



P.. MGRGENSTERN.

OIL WELL PUMP.

APPLICATION TILED JULY 10, 1908.

\ Patented Apr. 13, 1909.

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F. MORGENSTERN.

OIL WELL PUMP.

APILIOATION FILED JULY 1o. 190B.

Patented Apr. 13,1909.

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Bf mui TTORNE YJ' M. l/QW' y @FFlCE FREDERICK MORGENSTERN, OF MCKEESROCKS, PENNSYLVANIA.

OIL-WELL PUMP.

Specification of Letters Patent.

Patented April 13, 1909.

Application filed July 10, 1908. Serial N0. 442,950.

To all whom fit may concern:

Be it known that I, F nenmncu Moncen- STERN, residing at McKees Rocks,in the count-y of Allegheny and State of Pennsylvania, have inventedcertain new and useful Improvements in Oil-Well Pumps, of which thefollowing is specification.

This invention, which relates generally to improvements in oil wellpumping means, more particularly has for its object to provide animproved construction of the piston portion of the pump, of a simple andeconomical character that can be readily adapted for use in connectionwith the ordinary ty es of pumping mechanisms, and which,` when adjustedfor use, does not easily become out of order, broken or worn, andeffectively serves its intended purposes.

In that type of pumps in which the piston rod end has expansible packingrings, especially when of leather, by reason of the tine sand, grit andother sediment. that lodges under and between the rings, the said ringsvbecome worn so fast that. they usually have to be replaced every otherday. To overcome this objectionable feature, that of almost dailypulling out the piston and the consequent loss in the operation of thepump, l have provided a piston rod end construction for pumps thatcomprehends an elongated tubular piston member having the usual cagedvalve at the upper or outlet end, a plurality of expansion rings mountedthereon but held separated by members, tightly but removably, held onthe tubular piston body that have collecting spaces or pockets that takeup the sand and grit and relieve the expansive rings of the grinding orsticking actiomsuch as occurs when the sand or grit settles back of orbetween the eXpansive rings.

My invent-ion, in its more subordinate features consists in certaindetails of construction and peculiar' combination of parts,

'with the valve and caoe attached to the upper end thereof. Fig. 5, avertical section, parts being in perspective of one of the sedimentholding` cylinders. Fig. G, is a horizontal section taken substantiallyon the line (3--6 on Fig. 2. Fig. 7, is a similar view on the line T---Ton Fig. 2.

In the practical arrangement of my invention, the tubular piston body lmay be of the conventional length, its upper end having au annular seatl() that n'ierges with the nut or wrench receiving portion ll, that hasthe usual threads l2 for receiving the threaded end E20 of the cage 2that carries the ball valve 3 in the usual manner that works against avalve seat a. in the upper end of the rod l as clearly shown in Fig. 2.

Loosely mounted on the annular union nut T a collar -l upon which ismounted one or more split packing rings 43H5, the number of said ringsdepending on the height of the collars ,if in the present showing tworings being provided, the combined. height of which equals the height ofthe collar Ll. Other collars ela-sth are mounted on the tubular pistonbody and these are held at proper intervals by spacing cylinders orsleeves 6-(3, the lower one of which rests on the lower set of collarsand supports the collar il at its upper end and also the second set ofsplit packing rings :Snthat lit around the collar 4a. Mounted on thesecond set of rings 5a is the upper casing or sleeve Ga, on the upperend of which rests the third collar 4b and the third set of expansionpacking rings 5b which are held down to their seat by the annular flangel0 of the body 1 located at the upper end thereof.

lVhile l have shown two casing sections and three sets of split orpacking rings, it is mani-fest a greater or less number of said partsmay be used as may be found desirable. i

the rings 5 5l are of a diameter slightly greater than that of thesleeves ll-ela as to provide the necessary tight frictional contact withthe well tubing, as clearly shown iu Figs. 1,2 and l.

As heretofore stated, in the general type of oil well pumps, the packingor sucker head rings, either leather or metal, become more or lessincapacitated for use, almost l daily, by reason of the sand or gritget-ting Under the expansive or normal conditions in between the packingrings and the body of the piston head, when leather, cutting and quicklywearing them out when of metal spreading the split rings to such extentthat they frequently stick in the well tubing and thereby makes thepumping action ineiectlVe.

ln my construction ot pump, l have provided especial means forovercoming the objectionable features noted, by providing one or morepockets or receiving members that take up the spaces between the setrings which collect the sand and sediment that works in behind and underthe rings, said spaces in the construction shown being of suiiicientarea that the pumping or sucker head with the packing rings can be usedfor months before the said spaces need emptying.

The receiving spaces X are formed by making the upper portion of thesleeves lf- 4a of greater diameter than the tubular rod on which theylit and for a proper setting of the said upper ends they have internalvertical ribs e@ that bear on the body.

The ribs et extend down some distance from the top of the sleeve and donot extend the full depth of the space whereby the said space will havea full annular area to form a large pocket portion for receiving thesand and grit that trickles down between the ribs e0. To provide for thefree entry of the gritty substances into the pockets in the sleeves, thethickness of the collars H and the enlarged diameter of the upper endsof the sleeves are relatively such that when the collars are itted uponthe upper end of the sleeve, slots or openings g/-g/ located outside ofthe collars %4.1 are provided, as clearly shown in Fig. 2, the slotsbeing suficiently large to allow the grit and sand back of and betweenthe packing rings running down through the slots y-y.

F rom the foregoing description, taken in connection with theaccompanying drawings, the advantages and the complete construction willbe readily understood.

By reason of combining the parts as shown and described, the pumpinghead can be readily taken apart to provide for clearing the sleeveset-ltL-eb of the sediment collected therein.

Since ample means are provided for the escape of the sand and othergritty matter from behind and between the split ring it follows thatdanger of their' sticking by reason of being clogged by sand or becomingworn by sand rubbing is reduced to theV minimum.

Having thus described my invention, what l claim is 1. In a pump, incombination with a tubular piston body and packing rings mountedthereon; ot sand collecting means mounted on the body, in communicationwith the fluid spaces between the rings-,and the body.

2. ln a pump, the combination with the piston body and packing ringsmounted thereon, of sand collecting means removably mounted on the bodyand in communication Yith the Huid spaces between the rings and thebody.

3. ln an oil well pump, the combination with the piston body, a seriesof packing rings mounted thereon, casings removably mounted on the body,the ends of which have bearing on the packing rings, said casings havingsand collecting chambers in communication with the Huid spaces betweenthe rings and the body.

L in an oil pump, the combination with the tubular piston body, a seriesof expansible rings mounted on the body, casings mounted on the body,and whose ends engage the expansible rings, each of said casings havinga pendently extended sand collecting chamber whose upper end is incommunication with the iluid spaces between the expansible packing ringsmounted upon the said end.

5. ln an oil well pumping means ot' the character described, incombination with the tubular piston body section, having a valve holdingcage mounted at the upper end thereof, and a coupling member at. thelower end thereof; ot a series or' sleeves loosely mounted on the body,a series of casings loosely mounted on the body between the saidsleeves, each of said casings having a pendent sand receiving pocketwhose opening at the upper end of the sleeve extends beyond theperipheral edge of the loose sleeves and packing members mounted on thesleeve between the pocket equipped casings.

6. in a pump of the character described, the combination with thetubular piston body and the sleeve loosely mounted thereonfone or moreexpansible packing rings mounted on the sleeve and a casing looselymounted on the body having radial grooves extending vertically downwardfrom the upper end and an internal transverse groove that connects withthe vertical grooves, the vertical groove `being of such depth as toprovide openings at the upper end of the casing beyond the periphery ofthe sleeve.

FRED. MORGENSTERN.

llVitnesses GEORGE GRoH, ALBERT ENGnLBnECI-ir.

